3) protect 保护 跟 against， 表示 防止，防御，against 以防，制止，阻止，例如，Exercise will not only lower blood pressure but possibly protect against heart attacks.
在这个蓝色星球上，每一片绿意、每一滴清泉都是自然赋予我们的宝贵财富。然而，随着工业化进程的加速和人口的不断增长，环境问题日益严峻，保护我们共同的家园已成为全人类不可推卸的责任。环保行动，不仅仅是政府和企业的职责，更是每个人日常生活中不可或缺的一部分。
The friendly environment laid a sound foundation for people to live a happy life and keep them in good health， for which their dream came true. Some should succeed in creating the pleasant environment， so are people happening to know that this environment is considered as being important for them to live a comfortable life.
本文内容：关于绿色的一些常识常见的含有green的习语拓展习语（和其他颜色相关的习语表达见本人其他的整理文稿）Green is a color that is created by mixing blue and yellow.
